The researchers call for experimental studies to further examine the relationship between vitamin D, bone mineral density, and BPPV. Source. Talaat H., et al. Low bone mineral density and vitamin D deficiency in patients with benign positional paroxysmal vertigo. European Archives of Oto-Rhino-Laryngology, 2014.
Columnar epithelium forms the lining of the stomach and intestines. Some columnar cells are specialized for sensory reception such as in the nose, ears and the taste buds of the tongue. Goblet cells (unicellular glands) are found between the columnar epithelial cells of the duodenum.
The epithelium that lines the stomach is simple columnar that is comprised of goblet cells. These cells produce a protective alkaline mucus that contains bicarbonate. This protects the stomach from its own secretions (gastric juice). When looking at the surface of a fresh stomach, one can see that it is studded with millions of tiny pin holes.